<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>shrio login</title>
</head>
<body>
    <form action="${pageContext.request.contextPath }/checkLogin.do" method="post">
        userName:<input type="text"     name="userName"/><br>
        password:<input type="password" name="password"/><br>
        <input type="submit" value="登陆">${error }
    </form>
</body>
</html>